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Tropical Storm Laura Forecast Advisory Number 20
2020-08-24 22:44:18| National Hurricane Center (Atlantic)
Issued at 2100 UTC MON AUG 24 2020 619 WTNT23 KNHC 242044 TCMAT3 TROPICAL STORM LAURA FORECAST/ADVISORY NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL132020 2100 UTC MON AUG 24 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WATCH IS IN EFFECT FROM SAN LUIS PASS TEXAS TO OCEAN SPRINGS MISSISSIPPI...INCLUDING LAKE PONTCHARTRAIN...LAKE MAUREPAS AND LAKE BORGNE FOR AREAS OUTSIDE OF THE SOUTHEAST LOUISIANA HURRICANE AND STORM DAMAGE RISK REDUCTION SYSTEM. A HURRICANE WATCH IS IN EFFECT FROM PORT BOLIVAR TEXAS TO WEST OF MORGAN CITY LOUISIANA. A TROPICAL STORM WATCH IS IN EFFECT FROM SOUTH OF PORT BOLIVAR TO SAN LUIS PASS TEXAS AND FROM MORGAN CITY TO THE MOUTH OF THE MISSISSIPPI RIVER. THE TROPICAL STORM WARNING FOR LITTLE CAYMAN AND CAYMAN BRAC HAS BEEN DISCONTINUED. THE TROPICAL STORM WARNING FOR THE CUBAN PROVINCES OF CAMAGUEY AND LAS TUNAS HAS BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WATCH IS IN EFFECT FOR... * SAN LUIS PASS TEXAS TO OCEAN SPRINGS MISSISSIPPI * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND LAKE BORGNE A HURRICANE WATCH IS IN EFFECT FOR... * PORT BOLIVAR TEXAS TO WEST OF MORGAN CITY LOUISIANA A TROPICAL STORM WARNING IS IN EFFECT FOR... * CUBAN PROVINCES OF CIEGO DE AVILA...SANCTI SPIRITUS...VILLA CLARA... CIENFUEGOS...MATANZAS...MAYABEQUE...LA HABANA...ARTEMISA...PINAR DEL RIO...AND THE ISLE OF YOUTH * FLORIDA KEYS FROM CRAIG KEY TO KEY WEST * DRY TORTUGAS A TROPICAL STORM WATCH IS IN EFFECT FOR... * SOUTH OF PORT BOLIVAR TO SAN LUIS PASS TEXAS * MORGAN CITY LOUISIANA TO THE MOUTH OF THE MISSISSIPPI RIVER A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE- THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE...IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS. FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT HURRICANES.GOV. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. TROPICAL STORM CENTER LOCATED NEAR 21.7N 82.2W AT 24/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 17 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 60NE 60SE 0SW 0NW. 34 KT.......150NE 140SE 0SW 0NW. 12 FT SEAS..120NE 0SE 0SW 0NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 21.7N 82.2W AT 24/2100Z AT 24/1800Z CENTER WAS LOCATED NEAR 21.4N 81.4W FORECAST VALID 25/0600Z 22.7N 84.5W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 60NE 60SE 0SW 20NW. 34 KT...150NE 140SE 0SW 40NW. FORECAST VALID 25/1800Z 24.2N 87.4W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 50NE 50SE 20SW 30NW. 34 KT...150NE 140SE 40SW 70NW. FORECAST VALID 26/0600Z 25.7N 90.0W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 20SE 10SW 20NW. 50 KT... 50NE 50SE 30SW 40NW. 34 KT...150NE 140SE 60SW 80NW. FORECAST VALID 26/1800Z 27.5N 92.0W MAX WIND 85 KT...GUSTS 105 KT. 64 KT... 25NE 25SE 15SW 20NW. 50 KT... 60NE 60SE 30SW 40NW. 34 KT...140NE 140SE 60SW 100NW. FORECAST VALID 27/0600Z 29.8N 93.1W MAX WIND 90 KT...GUSTS 110 KT. 50 KT... 40NE 60SE 40SW 40NW. 34 KT...110NE 140SE 70SW 80NW. FORECAST VALID 27/1800Z 32.5N 93.0W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 80SE 30SW 50NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 28/1800Z 36.1N 90.0W...INLAND MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 29/1800Z 36.5N 80.5W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.7N 82.2W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 25/0000Z NEXT ADVISORY AT 25/0300Z $$ FORECASTER BROWN
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